Stencil-printing machine.



PATENTED OCT. 16, 1906.

J. A. AMBLER. STENCIL PRINTING MACHINE.

APPLICATION FILED DEC. 6. 1905.

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No. 833,497. PATENTED OCT. 16, 1906.

J. A. AMBLBR. I STENCIL PRINTING MACHINE.

APPLICATION FILED DEC. 6. 1905.

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the s UNITED STATES JAMES A. AMBLER, OF NATICK, MASSACHUSETTS.

STENCIL-PRINTING MACHINE.

Specification of LettersPatent.

Patented Oct. 16, 1906.

Application filed December 6,1965. salami). 290,562.

To all whom it may concern:

Be it known that I, JAMES A. AMBLER, a citizen of the United States, residing at Na tick, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Stencil-Printin-g Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to stencilprinting machines, and more particularly to stencil-printing machines which comprise a rotary stencil-carrier and a cooperating impression-roll.

In the use of stencil-printing machines it is customary to arrange the printed sheets as they are delivered from the machine in a pile with a sheet of blotting-paper interposed be,- tween each two printed sheets. A large" number of sheets of blotting-paper are re quired, and the handling of these sheets gives considerable trouble, the printing operation. being performed in a slow and laborious manner, unless two persons are employed in operating the machine, and in arranging the sheets? of blotting-paper and the printed sheets? The principal object of the present invention is to provide an attachment for stencil-.

printing machines by which sheets of blotting-paper are associated with the printed sheets during the operation of the machine and each printed sheet is delivered from the machine superimposed upon a sheet of blottingaper, whereby a separate handling of lieets of blotting-paper is avoided and the printed sheets are arranged in a pile, with: asheet of blotting-paper between each sheet, without any special care on the part of the person using the machine and the operations of printing the sheets and arranging the printed sheets and sheets of blotting-paper can be performed as quickly and in as satisfactory a manner as when these two operations are erformcd by separate persons.

With tiiis object in view a feature of the present invention contemplates the provision in a stencil-printing machine provided with a rotary stencil-carrier and an impression-roll of a supply of blotting-paper separate from the paper to be printe which is fed between contact between the stencil-carrier and the the stencil-carrier and impression-roll, with the paper-to be printed superimposed thereon, and which is delivered from the machine in sheets corresponding in number to the printed sheets.

Broadly considered, the invention contemplatesthe provision of any suitable su ply of blotting-paper arran ed in any desire manner so as to' passbet veen the stencil-carrier and impression roll, with the pa er to be printed superimposed thereon. A so the in- V vention is not limited to any particular form of rotary stencil-printing machine and may be embodied either in a machine to which the paper to be printed is supplied in sheets or to a machine to which the paper to be rinted is supplied in, the form of a web whic is cut into sheets of the desired size in passing through the machine.

In the preferred form of the invention the bloging-paper is in the form of a web, and mechanism is provided for severing the Web into 'sheets corresponding in number to the printed sheets In order that sheets may be severed from the web of blottin paper of the desired size as compared with t e size of the printed sheets, the mechanism for severing the web ispreferably arranged to act on the web in front of the stencil-carrier and impression-roll and means are provided for presenting the leading end of the web to the bite of the stencil-carrier and impression-roll. By so locating the cutting mechanism the sheets cut from the web of blotting-paper may be of any desired length irrespective of the length of the stencil-sup ortmg surface of the stencil-carrier or of t e duration of the impression-roll. To present the leading end of the web to the bite of the stencil-carrier and impression-roll at the proper time during the rotation of the stencil-carrier, a feeding mechanism is provided which is arranged to present the end of the web to the stencil-carrier and roll and thereafter permit the web to be fed by the action of the stencil-carrier and roll thereon. This feeding mechanism, in combination with a severing mechanism arranged to act on the web in front of the stencil-carrier and impression-roll, constitutes a feature of the present invention which is not limited to use in connection with a web of blottin -paper, as it is obvious that it could be use advantageously in stencilprinting machines to feed and sever a web of paper to be formed into printed sheets.

In addition to the features of invention above referred to the present invention also consists in certain devices, combinations, and arrangements of parts, the advantages of which will be obvious to those skilled in the art from the following description.

The several features of the present invention will be clearly understood from an inspection of the accompanying drawings, in which' Figure 1 is a view in side elevation, with one of its sides removed, of so much of a stencil-printing machine as is necessary to show the connection of the present invention therewith. Fig. 2 is a view similar to Fig. 1 with a portion of the stencil-carrier and im ression-roll broken away and with the mec anism for feeding and severing the web of blotting-paper shown in section. in front end elevation of the parts illustrated in Fig. 1' with the support for the roll of blotting-paper omitted and with the upper portion of the side standards of the -mach1neframe broken away. Fig. 4 is a detail view of the preferred form of severing-knife, and Fig. 5 1s a detail view of a modified form of the severing-knife.

The stencil-printing machine illustrated in the drawings comprises a rotary stencil-carrier 1 provided with a stencil-su porting surface 2 extending a little more t an hall-way around the circumference of the carrier, and with cam-surfaces 3 at its ends, by which the carrier is raised bodily a short distance during a portion of its revolution. The stencilcarrier issecured to a shaft 4, the ends of which rest upon horizontal surfaces at the upper ends of the side standards 5 of the frame and are pressed upon by pivoted levers 6, which serve to force the stencil-carrier yieldingly toward the im ression-roll. The impression-roll is indicate at 7 and is mounted to rotate in fixed bearings beneaththe stencil-carrier. This impression-roll is provided with a covering 8, of yielding material, which cooperates with the stencil-sheet supported upon the surface 2 in feeding the paper to be printed and the blotting-paper .and which also cooperates with the knife for sev ering the blotting-paper into sheets, as will be hereinafter described. The stencil-carrier and im ression-roll rotate at the same periphera speed in the direction of the arrows applied to these parts on Fig. 1, and the paper to be printed is presented to the stencil-carrier and impression-rollfrom the left-hand side of the machine as viewed in this figure, a feeding-table being supported upon the frame of Fig. 3 is a viewthe machine, as illustratedin my prior patent, No. 696,393, dated April 1 1902.

In applying the present invention to the machine illustrated in the drawings a shaft 9 is provided inthe front portion of the machineframe, which supports a reel 10, carrying a web 11, of blottingaper or other material, adapted to act in substantially the same manner. From the reel 10 the blotting-paper passes between two rolls 12 and 13, and from these rolls it passes between the impression-roll 8 and a severing-knife 14. The roll 13 is rotatably mounted upon a fixed shaft 15, and the roll 12 is rotatably mounted on a frame 16, ivotally mounted upon the shaft 15. A rol 17 is also mounted in the frame 16 and contacts with the roll 12. The roll 17 is adapted to be brought into engagement with the impression-roll 8, so as to be ro-' tated thereby, and when rotated actuates the rolls 12 and 13 to feed the web of blottingaper, so as to present its leading end to the Bite of the stencil-carrier and impression-roll. .The roll'17 is normally held out of engagement with the impression-roll by means of a spring 18, connected to the frame 16 and acting to hold' the frame against a stop-pin 19. The roll 17 is moved into engagement with the impression-roll at the proper time during the rotation of the stencil-carrier by means of a cam 20, secured to one end of the stencilcarrier and arranged to engage a projection 21 at the up or end of an arm 22, rojecting from one si e of the frame 16. T e cam 20 is so located that during the first portion of the revolution of the stencil-carrier the roll 17 is held in engagement with the impressionroll and the leading end of the web of blotting-paper is fed into a position between the stencil-carrier and impression-roll. When, however, the cam-surfaces 3 on the stencilcarrier pass out of engagement with the impression-roll and the stencil on the stencilsupporting surface 2 contacts with the pa er to be printed, which paper has been place in position between the stencil-carrier and impression-roll, the cam 20 asses out of engagement with the projection 21 on the arm 22 and the roll 17 is moved by the spring 18 out of engagement with the impression-roll. During the continued rotation of the stencilcarrier the blotting-paper and the pa er to be printed superimposed thereon is ed by the action of the stencil-carrier and im ression-roll. After the pro er amount of )lotting-paper has been pul ed from the reel 10 the cutter 14 is actuated to sever the paper by means of a pin 23, mounted in the opposite end of the stencil-carrier from the cam 20, which pin en ages an arm 24, projecting u wardly from the frame 25, which carries t e knife 14, which frame is pivotally mounted upon the shaft 15. The knife 14 is preferably provided with a serrated edge and cooperates withthe yielding surface of the imressionroll to sever the web of blottin paper mto sheets of the desired length. T eedge of this knife is preferably shaped as illustrated in .Fig. .4, with the central portion of the edge projecting slightly beyond the end portions. knife which has given satisfactory results, however, is indicated at 14: in Fig. 5, which knife is provided with a straight e ge.

It will be noted that the web of blottingpaper is severed-in front of the stencil-carrier and impression-roll while the main portion of the web remains stationary. This arrangement permits the web of blottingpaper to be severed into sheets of any de sired length, the length of the sheet not being dependent upon the length of the stencilsupporting surface 2 nor u on the duration of contact of this surface with the printed sheet or with the im ression-roll. As will be obvious to those shilled in the art, this arrangement of the web-severing and web-feeding mechanism might be used advantageously in connection with a web of paper to be formed into printed sheets. To vary the length of the sheet severed from the Web 11, the pin 23 is mounted in the stencil-carrier so as to be adjustable circumferentially thereof, the inner end of the pin being received in a groove in the end of the carrier, as indicated in Figs. 1 and 2, and secured therein in any desired manner.

The nature and S00 e of the present invention having been in icated and a preferred form of the invention having been specifically described, what is claimed is 1. A stencil-printing machine, having, in combination, a rota stencil-carrier, an impression-roll, means or supporting a supply of blotting-paper separate from the paper to be printed, and means for presenting the blotting-pa er to the stencil-carrier and impression-ro with the paper to be printed interposed between the blotting-paper and stencil-carrier, whereby the printed paper is delivered superimposed upon the blottingpaper.

2. A stencil-printing machine, having, in

" combination, a rotary stencil-carrier, an 1mpression oll, means for supporting a web of lotting-paper, means for presenting the leading end of the web to the bite of the stencil-carrier and im ression-roll, and mechanism for severing the web into sheets ar ranged to act on the web in front of the stencil-carrier and impression-roll whereby each printed sheet is delivered superimposed upon a sheet of blotting-paper.

3. A stencil-printing machine, having, in

' rier for throwing the webcombination, a rotary stencil-carrier, an impression-roll, and means for supporting a supply of blotting-paper separate from the paper to be printed in position to be fed between the stencil-carrier andimpressionroll with the pa er to be printed interposed between the b otting-paper and stencil-carrier, whereby the printed paper is delivered superimposed upon the blotting-paper.

4. A stencil-printing machine, having, in

combination, a rotar stenc1lcarrier, an impression-roll, means ibr supporting a web of paper, web-feeding mechanism, mechanism for severing the web into sheets arranged to act on the Web in front of the stencil-carrier and impression-roll and means for throwing the feeding mechanism into and out of operation to cause the leading end of the web to be presented to the stencil-carrier and impressionroll and permit the web to be fed thereby.

5. A stencil-printing machine, having, in combination, a rotary stencil-carrier, an impression-roll, means for supporting a web of paper, web-feeding mechanism acting at each printing operation to present the leading end of the web to the stencil-carrier and impression-roll and permit the web to be fed thereby, and mechanism for severing the Web into sheets arranged to act on the web in fnipt of the stencil-carrier and impressionro 6. A stencil-printing machine, having, in combination, a rotary stencil-carrier, an impression-roll, means for supporting a web of aper, web-feeding mechanism, web-severmg mechanism arranged to act on the web in front of the stencil-carrier and impressionroll, and means actuated by the stencil-careeding mechanism into 0 eration to present the leading end of the we to the bite of the stencil-carrier and impression-roll.

7. A stencil-printing machine, having, in combination, a rotary stencil-carrier, an imression-roll, means for supporting a web of blotting-paper, web-feeding mechanism, means actuated by the stencil-carrier for throwing the web-feeding mechanism into operation to present the web to the stencilcarrier and impression-roll in osition to be fed thereby with the paper to e printed superimposed thereon and web-severing mechanism arranged to act on the web in front of the stencil-carrier and impression-roll.

8. A stencil-printing machine, having, in combination, a rotary stencil-carrier, an impressionroll, means for en porting a supply of blotting-paper separate irom the paper to be printed, and means for presenting the blotting-paper to the stencil-carrier and impressionroll at each operation of said carrier and roll with the paper to be printed a r 833,497 I interposed between the blotting-paper and stencil-carrier whereby the printed aper is delivered superimposed upon the b ottingpaper.

5 9. A-stencil-printing machine, having, in

combination, a rotary stencil-carrier, an impression-roll, means for supporting a web of 1otting-paper-separate from the pa er to be printed in position to be fed with t e paper 10 to be printed between the-stencil-carrier and impression-roll, and mechanism for severing the Web of blotting-paper into sheets whereby each;printed sheet is delivered superimposed upona sheet of blotting-paper.

In testimony whereof I affix my signature 1 5 in presence of two witnesses.

JAMES A. AMIBLER. Witnesses:

FRED O. FISH, FARNUM F. DORSEY. 

